RUNAMUCK Posted December 12, 2022 Share Posted December 12, 2022 I'd say the latter. I swapped a 32/36 Weber off my A15 for a 350cfm 2bbl, and the reduction in fuel consumption was out of this world. 2 Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted December 17, 2022 Share Posted December 17, 2022 Bloody good work there chap! That intake actually looks like a pretty efficient design too. Swapped to an ECU with a map sensor, those trumpets would sound glorious if they were open to atmosphere...... 1 Quote Link to comment Share on other sites More sharing options...
Nominal Posted December 17, 2022 Share Posted December 17, 2022 I was looking at those old rocker covers and thinking that they weren't very KWS. Glad you had some painted ones to go on! 1 Quote Link to comment Share on other sites More sharing options...
CUL8R Posted December 18, 2022 Share Posted December 18, 2022 Nice work, pleased to see your research and hard work has paid off. Look forward to a update once you've had a chance to give it a good run in the dry and tell us what the butt dyno says lol 1 Quote Link to comment Share on other sites More sharing options...
VitesseEFI Posted December 21, 2022 Share Posted December 21, 2022 Congrats on the successful outing. I expected no less. Fuel economy is….. errr…… 12.33mpg if you use imperial gallons. Still fairly horrific. Something not right there- about double thst should be possible. Imagine Speeduino and a bit of tuning will help a lot. Presumably the 3.9 could handle a stiffer torque converter for a bit less slip…. Not that you’ll be wanting to pull the engine again! Nick 1 Quote Link to comment Share on other sites More sharing options...
kws Posted December 21, 2022 Author Share Posted December 21, 2022 Its pretty bad, but not that much different in economy from all my other SD1s, so one must presume its my driving thats causing most of it. Speeduino should help, as the Lucas/Bosch system is quite primitive and has zero learning ability. It doesnt smell particularly rich, but ill pull a plug out and see what it says. 2 Quote Link to comment Share on other sites More sharing options...
VitesseEFI Posted December 21, 2022 Share Posted December 21, 2022 1 hour ago, kws said: not that much different in economy from all my other SD1s Really? Are you a hooligan? A mate had a series 2A shorty with coil spring chassis, RR ‘box and 3.9 V8 on SUs. It weighed almost 2.5 tons and still did better than that on fuel. Except when towing a horse box with two fat horses in it, when it did worse, though not much worse…. I shall follow the development with great interest. Fuel economy hides in the ignition timing map as well as the fuel map, but I sure you know that. Nick Quote Link to comment Share on other sites More sharing options...
kws Posted December 22, 2022 Author Share Posted December 22, 2022 They're all weekend cars, so get used fairly spiritedly. This one does appear to be running rich though and im not sure why. Checked a plug on each bank and both look the same; white/pale brown strap but jet black ring. Unfortunately i set the goal of the Marina being on the road before Speeduino gets installed, so thats a while off yet, so may have to actually work out whats going wrong with the Flapper EFI. 1 Quote Link to comment Share on other sites More sharing options...
Otodat Posted December 22, 2022 Share Posted December 22, 2022 You mentioned hills and traffic, so probably a about similar to my father's 3.9 disco for normal driving. No doubt on a decent cruise on good open roads the figure would improve some. Quote Link to comment Share on other sites More sharing options...
nzstato Posted December 22, 2022 Share Posted December 22, 2022 From my own 3.9 Disco era... 16L / 100km was about average 'around town' 13L / 100km best on a longer trip They love to drink it Quote Link to comment Share on other sites More sharing options...
VitesseEFI Posted December 22, 2022 Share Posted December 22, 2022 13 minutes ago, nzstato said: From my own 3.9 Disco era... 16L / 100km was about average 'around town' 13L / 100km best on a longer trip They love to drink it 22.9 reported…… that’s heavy duty drinking. Quote Link to comment Share on other sites More sharing options...
Otodat Posted December 22, 2022 Share Posted December 22, 2022 That's ... Interesting 1 Quote Link to comment Share on other sites More sharing options...
kws Posted December 22, 2022 Author Share Posted December 22, 2022 42 minutes ago, nzstato said: From my own 3.9 Disco era... 16L / 100km was about average 'around town' 13L / 100km best on a longer trip They love to drink it I'd be far happier with those sort of figures. The advantage the disco has is that it's running the hotwire injection, while the old analogue flapper injection I'm running is obviously like throwing a fuel can on a bonfire for fuelling. Quote Link to comment Share on other sites More sharing options...
Popular Post kws Posted December 23, 2022 Author Popular Post Share Posted December 23, 2022 Drove the car to work again today. Dont even care about economy, its great to drive. Smiles per mile and all that. 12 Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted December 23, 2022 Share Posted December 23, 2022 And what's cool about it is that you'll in time be able to have injecting it and improving its efficiency. But yeah- just drive it for now. Its summer, you've put some hard effort into getting this far, entertained us all with your brilliant thread as usual so you deserve a break! 3 Quote Link to comment Share on other sites More sharing options...
ajg193 Posted April 9, 2023 Share Posted April 9, 2023 Amazing how this has come out in the end. It looks like putting the new engine in was well worth the effort and the stress of the crap situation ended up being only a blip in the grand scheme. 3 1 Quote Link to comment Share on other sites More sharing options...
kws Posted April 10, 2023 Author Share Posted April 10, 2023 11 hours ago, ajg193 said: Amazing how this has come out in the end. It looks like putting the new engine in was well worth the effort and the stress of the crap situation ended up being only a blip in the grand scheme. You're not wrong, it's really panned out far better than I had expected. There's been a lot of blood, sweat and tears, but it's a bloody good car to drive now and it probably would've ended up in the "left to rot" thread had it gone back to the previous dickhead owner. 5 Quote Link to comment Share on other sites More sharing options...
Tiger Tamer Posted June 19, 2023 Share Posted June 19, 2023 Enjoyed the last post in your build and how you diagnosed what the problem was. You probably have pulled the plugs and cleaned or replaced them after all the rich running. it would be interesting to see what they looked like. 2 Quote Link to comment Share on other sites More sharing options...
kws Posted June 19, 2023 Author Share Posted June 19, 2023 2 hours ago, Tiger Tamer said: Enjoyed the last post in your build and how you diagnosed what the problem was. You probably have pulled the plugs and cleaned or replaced them after all the rich running. it would be interesting to see what they looked like. I pulled the plugs the other weekend and they were black, but not carboned up, so I didn't clean them. It will be interesting to pull them again after this tank and see how they are then. 2 Quote Link to comment Share on other sites More sharing options...
Lord Gruntfuttock Posted June 19, 2023 Share Posted June 19, 2023 Love the swappable O2 sensor/gauge system. Cool piece of kit... Quote Link to comment Share on other sites More sharing options...
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